Veneer Ceramic for Dental Restorations and Method for Veneering Dental Restorations
AssigneeIvoclar Vivadent AG
InventorsMartina Johannes, Roland Ehrt
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Abstract
The invention is directed to veneer ceramics for dental restorations of framework ceramics comprising yttrium-stabilized zirconium dioxide. It is the object of the invention to make possible a translucent veneer ceramic which has high flexural strength as well as excellent adhesion to the framework ceramic of yttrium-stabilized zirconium dioxide. According to the invention, this object is met in a veneer ceramic for dental restorations made of yttrium-stabilized zirconium dioxide which is produced from the following components: a) SiO2 58.0-74.0 percent by weight b) Al2O3 4.0-19.0 percent by weight c) Li2O 5.0-17.0 percent by weight d) Na2O 4.0-12.0 percent by weight e) ZrO2 0.5-6.0 percent by weight.
Claims16
Veneer ceramic for dental restorations comprising yttrium-stabilized zirconium dioxide, characterized in that the veneer ceramic comprises the following components:
- a)
- SiO2
- 58.0-74.0 percent by weight
- b)
- Al2O3
- 4.0-19.0 percent by weight
- c)
- Li2O
- 5.0-17.0 percent by weight
- d)
- Na2O
- 4.0-12.0 percent by weight
- e)
- ZrO2
- 0.5-6.0 percent by weight.
Veneer ceramic for dental restorations comprising yttrium-stabilized zirconium dioxide, characterized in that the veneer ceramic comprises the following components:
- a)
- SiO2
- 58.0-72.0 percent by weight
- b)
- Al2O3
- 4.0-18.0 percent by weight
- c)
- Li2O
- 5.0-17.0 percent by weight
- d)
- Na2O
- 4.0-11.0 percent by weight
- e)
- ZrO2
- 0.5-5.5 percent by weight
- f)
- TiO2
- 0.2-8.0 percent by weight.
Dependencies are inferred from the claim text.